EXCHANGE RATE - [noun phrase] the rate at which the money of different countries can be exchanged
Examples of use
I took a foreign currency loan, because the exchange rate was favourable then.
The exchange rate forecast predicts pound slide against dollar this week.
Learn more English words
English speaking practise
Remember that if you don't use that word in English conversations or writing you'll forget it in a short time. So the best thing you can do to learn this word is just trying to use it in speaking or writing. Remember also that practise is the key to fluent english speaking.
You can always find a partner, who would also like to improve his/her